From 3af07addf6742454f2f984dac24147e2fe65fde3 Mon Sep 17 00:00:00 2001
From: Dan Brown <ssddanbrown@googlemail.com>
Date: Tue, 12 Dec 2023 15:59:12 +0000
Subject: [PATCH] Default templates: Fixed syntax for php8.0, added test

Null accessor is akward in php8.0 and throws warnings, so removed.
Added test to check template assingment handling on page delete.
---
 resources/views/books/parts/form.blade.php |  2 +-
 tests/Entity/BookDefaultTemplateTest.php   | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/resources/views/books/parts/form.blade.php b/resources/views/books/parts/form.blade.php
index 973bae987..e22be619d 100644
--- a/resources/views/books/parts/form.blade.php
+++ b/resources/views/books/parts/form.blade.php
@@ -49,7 +49,7 @@
                 @include('form.page-picker', [
                     'name' => 'default_template_id',
                     'placeholder' => trans('entities.books_default_template_select'),
-                    'value' => $book?->default_template_id ?? null,
+                    'value' => $book->default_template_id ?? null,
                 ])
             </div>
         </div>
diff --git a/tests/Entity/BookDefaultTemplateTest.php b/tests/Entity/BookDefaultTemplateTest.php
index f23ba4a8e..d4cd5b2c3 100644
--- a/tests/Entity/BookDefaultTemplateTest.php
+++ b/tests/Entity/BookDefaultTemplateTest.php
@@ -159,6 +159,21 @@ class BookDefaultTemplateTest extends TestCase
         $this->assertEquals('', $latestPage->markdown);
     }
 
+    public function test_template_page_delete_removes_book_template_usage()
+    {
+        $templatePage = $this->entities->templatePage();
+        $book = $this->bookUsingDefaultTemplate($templatePage);
+
+        $book->refresh();
+        $this->assertEquals($templatePage->id, $book->default_template_id);
+
+        $this->asEditor()->delete($templatePage->getUrl());
+        $this->asAdmin()->post('/settings/recycle-bin/empty');
+
+        $book->refresh();
+        $this->assertEquals(null, $book->default_template_id);
+    }
+
     protected function bookUsingDefaultTemplate(Page $page): Book
     {
         $book = $this->entities->book();